<html>
  <head>
    <link rel="stylesheet" type="text/css" href="1.css"> 
  </head>
  <body>
    <h1>Popup/Modal Windows without JavaScript</h1>
    <div class="box">
      <a href="#popup1" class="button">Let me Pop up</a>
    </div>

    <div class="overlay" id="popup1">
      <div class="popup">
        <h2>Here i am</h2>
        <a href="" class="close">&times;</a>
        <div class="content">Thank to pop me out of that button, but now i'm done so you can close this window.</div>
      </div>
    </div>
  </body>
</html>